If you’re trying to install vSphere onto an x64 Windows server, you might have hit a snag where the installation requests the creation of a 32-bit Data Source Name (DSN) for its database. If you’re attempting to create that DSN through the “regular” Data Sources (ODBC) administrative tool, you’re going to have a problem.

The “regular” ODBC console only has the capability of creating system DSNs that are used by x64 processes. What you need is the “other” ODBC console that works for x86.